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All results from a given calculation for HOCN (cyanic acid)

using model chemistry: TPSSh/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at TPSSh/6-31G*
 hartrees
Energy at 0K-168.631747
Energy at 298.15K-168.632629
HF Energy-168.631747
Nuclear repulsion energy57.705410
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at TPSSh/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3673 3524 113.22      
2 A' 2361 2265 105.02      
3 A' 1251 1200 107.42      
4 A' 1093 1049 64.24      
5 A' 432 414 14.61      
6 A" 487 467 1.89      

Unscaled Zero Point Vibrational Energy (zpe) 4648.2 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 4459.5 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at TPSSh/6-31G*
ABC
21.93717 0.34889 0.34343

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.179 1.333 0.000
C2 0.000 0.180 0.000
O3 0.037 -1.122 0.000
H4 0.957 -1.439 0.000

Atom - Atom Distances (Å)
  N1 C2 O3 H4
N11.16632.46412.9956
C21.16631.30271.8811
O32.46411.30270.9734
H42.99561.88110.9734

picture of cyanic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 O3 172.798 C2 O3 H4 110.639
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.411      
2 C 0.500      
3 O -0.551      
4 H 0.461      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.586 -3.574 0.000 3.910
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.689 -0.125 0.000
y -0.125 4.172 0.000
z 0.000 0.000 1.405


<r2> (average value of r2) Å2
<r2> 36.294
(<r2>)1/2 6.024